From c4df98c26cde5e7e4da0bf0b72e019a01a2386c7 Mon Sep 17 00:00:00 2001
From: Tevin <tingquanren@163.com>
Date: Sat, 16 Jul 2022 18:55:43 +0800
Subject: [PATCH] 实现图片文件管理 java 通讯
---
common/Bridge.js | 107 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 104 insertions(+), 3 deletions(-)
diff --git a/common/Bridge.js b/common/Bridge.js
index efc8eb3..8514c83 100644
--- a/common/Bridge.js
+++ b/common/Bridge.js
@@ -24,6 +24,7 @@
import { Fetcher } from '@components/bases/Fetcher';
import { Tools } from '@components/common/Tools';
+import { $fileTrans } from '@components/common/FileTransform';
export class Bridge {
@@ -98,9 +99,16 @@
this[name] = (res) => {
if (callback && Tools.isFunction(callback)) {
if (res) {
- let data = typeof res === 'string' ? JSON.parse(res) : res;
- // 转换接收参数键名为驼峰
- data = this.transKeyName('camel', data);
+ let data;
+ try {
+ // 转对象
+ data = typeof res === 'string' ? JSON.parse(res) : res;
+ // 转换接收参数键名为驼峰
+ data = this.transKeyName('camel', data);
+ } catch (e) {
+ Tools.toast('跨端通讯异常：解析数据失败！');
+ return;
+ }
callback(data);
} else {
callback();
@@ -211,6 +219,99 @@
return Fetcher.prototype.transKeyName(type, json);
}
+ /* ----- 文件系统 ----- */
+
+ /**
+ * 保存文件 base64 到 java
+ * @param objUrl
+ * @param callback
+ */
+ fileSave(objUrl, callback) {
+ // 分段存储
+ const saveFileChunk = (baseData, index) => {
+ const writeData = {
+ fileName: baseData.fileName,
+ currentIdx: index,
+ totalIdx: baseData.total,
+ data: baseData.baseArr[index],
+ };
+ this.invoking('img_write', writeData, res => {
+ if (res.result === false) {
+ Tools.toast(res.msg);
+ return;
+ }
+ // 按分段递归保存
+ if (index < baseData.total - 1) {
+ setTimeout(() => {
+ saveFileChunk(baseData, index + 1);
+ }, 10);
+ }
+ // 已完成
+ else {
+ callback && callback('bridge:' + baseData.fileName);
+ }
+ });
+ };
+ $fileTrans.transObjUrlToBaseData(objUrl, baseData => {
+ saveFileChunk(baseData, 0);
+ });
+ }
+
+ /**
+ * 从 java 读取文件 base64
+ * @param fileName
+ * @param callback
+ */
+ fileLoad(fileName, callback) {
+ if (fileName.indexOf('bridge:') < 0) {
+ callback('');
+ return;
+ }
+ fileName = fileName.split(':')[1];
+ const chunkSize = $fileTrans.getChunkSize();
+ const baseArr = [];
+ let totalSize = 0;
+ let totalCount = 0;
+ const loadFileChunk = (index) => {
+ const loadData = {
+ fileName,
+ offset: chunkSize * index,
+ length: chunkSize,
+ };
+ this.invoking('img_read', loadData, res => {
+ if (totalSize === 0) {
+ totalSize = res.totalSize;
+ totalCount = Math.ceil(res.totalSize / chunkSize);
+ }
+ baseArr.push(res.data);
+ // 按分段递归读取
+ if (totalCount > 1 && totalCount - 1 > index) {
+ loadFileChunk(index + 1);
+ }
+ // 读取完成
+ else {
+ const baseData = {
+ baseArr,
+ fileName,
+ };
+ $fileTrans.transBaseDataToObjUrl(baseData, objUrl => {
+ callback && callback(objUrl);
+ });
+ }
+ });
+ };
+ loadFileChunk(0);
+ }
+
+ fileRemove(fileName) {
+ if (fileName.indexOf('bridge:') < 0) {
+ callback('');
+ return;
+ }
+ fileName = fileName.split(':')[1];
+ this.invoking('img_del', { fileName });
+ }
+
}
// 全局服务实例
--
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